Organic thin film display element

Abstract

An organic thin film display element comprises an organic thin film containing donor moleculaes and acceptor molecules and a pulse voltage source for causing a charge transfer between the donor molecules and the acceptor molecules. The charge transfer varies the optical characteristic of the organic thin film, whereby the organic thin film displays an image.

What is claimed is: 
     
       1. A thin organic film display element, comprising: a thin organic film layer including at least one first thin organic film containing donor molecules and at least one second thin organic film containing acceptor molecules, wherein said thin organic film layer has at least two interfaces between said first thin organic film and said second thin organic film; and   means for causing a charge transfer between the donor molecules and the acceptor molecules, said charge transfer varying the optical characteristics of the thin organic film layer, whereby the organic thin film layer displays an image.   
     
     
       2. The display element of claim 1, wherein said thin organic film layer comprises a plurality of repeatedly stacked layers comprising said first thin organic film and said second thin organic film. 
     
     
       3. The display element of claim 2, wherein a third thin organic film containing electrically insulating organic molecules is interposed between said first thin organic film and said second thin organic film. 
     
     
       4. The display element of claim 2, wherein each of said stacked layers comprises said first thin organic film and said second thin organic film, and a third thin organic film containing electrically insulating organic molecules interposed between said stacked layers. 
     
     
       5. The display element of claim 1, wherein at least one of said first thin organic film and said second thin organic film contains electrically insulating organic molecules. 
     
     
       6. The display element of claim 1, wherein said thin organic film layer has a super lattice structure. 
     
     
       7. The display element of claim 1, wherein said thin organic film layer contains at least one of different donor molecules or different acceptor molecules. 
     
     
       8. The display element of claim 1, wherein said first thin organic film contains different donor molecules. 
     
     
       9. The display element of claim 1, wherein said second thin organic film contains different acceptor molecules. 
     
     
       10. The display element of claim 1, wherein said first thin organic film contains different donor molecules, and said second thin organic film contains different acceptor molecules. 
     
     
       11. The display element of claim 1, wherein a thin film containing electrically insulating organic molecules is formed on at least one surface of said thin organic film layer. 
     
     
       12. The display element of claim 1, wherein said thin organic film layer is a laminate consisting of LB films. 
     
     
       13. The display element of claim 1, wherein a stripe-like scanning electrode is formed on one side of the opposing surfaces of said thin organic film layer, a stripe-like signal electrode is formed on the other opposing surface of said thin organic film layer and extends at right angles to the stripe-like scanning electrode, and said means for causing a charge transfer is connected to the scanning electrode and signal electrode for selectively applying a pulse voltage to said thin organic film layer. 
     
     
       14. A thin organic film display element, comprising: a thin organic film layer which comprises at least one thin organic film containing both donor molecules and acceptor molecules; and   means for causing a charge transfer between the donor molecules and the acceptor molecules, said charge transfer varying the optical characteristic of the thin organic film, whereby the thin organic film displays an image;   wherein a thin film containing electrically insulating organic molecules is formed on at least one surface of said thin organic film layer.   
     
     
       15. The display element of claim 14, wherein said thin organic film contains at least one of different donor molecules or different acceptor molecules. 
     
     
       16. The display element of claim 14, wherein said thin organic film layer comprises a plurality of thin organic films each containing donor molecules and acceptor molecules. 
     
     
       17. The display element of claim 14, wherein each of said thin organic films contains at least one of different donor molecules or different acceptor molecules. 
     
     
       18. The display element of claim 14, wherein said thin organic film is an LB film. 
     
     
       19. A thin organic film display element, comprising: a thin organic film layer which comprises at least one thin organic film containing both donor molecules and acceptor molecules; and   means for causing a charge transfer between the donor molecules and the acceptor molecules, said charge transfer varying the optical characteristics of the thin organic film, whereby the thin organic film displays an image;   wherein a stripe-like scanning electrode is formed on one of the opposing surfaces of said thin organic film layer, a stripe-like signal electrode is formed on the other opposing surface of said thin organic film layer and extends at right angles to the stripe-like scanning electrode, and said means for causing a charge transfer is connected to the scanning electrode and signal electrode for selectively applying a pulse voltage to said thin organic film layer.